Since there can be up to eight daughter cards, the ET must be able to distinguish between one card and another
so that it can properly report point status information. Therefore, each daughter card provides switch package Sl
to select an address for that particular daughter card (from zero to seven in binary). Set the switches on switch
package Sl on all three digital monitor boards as shown in the illustrations at the beginning of this section and
Table J.
TABLE J
CARD POSITION
Sl-4
Sl-3 Sl-2 Sl-1
1
C C
C C
2
C C
C
0
I c I 0 I c I c
6
C 0 C
0
7
C 0 0
C
8
C 0 0
0
C = CLOSED
0 = OPEN
29